PMID- 37721580 OWN - NLM STAT- MEDLINE DCOM- 20240109 LR - 20240116 IS - 1619-7089 (Electronic) IS - 1619-7070 (Linking) VI - 51 IP - 2 DP - 2024 Jan TI - Baseline [(18)F]FDG PET features are associated with survival and toxicity in patients treated with CAR T cells for large B cell lymphoma. PG - 481-489 LID - 10.1007/s00259-023-06427-6 [doi] AB - PURPOSE: Chimeric antigen receptor (CAR) T cells have established themselves as an effective treatment for refractory or relapsed large B cell lymphoma (LBCL). Recently, the sDmax, which corresponds to the distance separating the two farthest lesions standardized by the patient's body surface area, has appeared as a prognostic factor in LBCL. This study aimed to identify [(18)F]FDG-PET biomarkers associated with prognosis and predictive of adverse events in patients treated with CAR T cells. METHODS: Patients were retrospectively included from two different university hospitals. They were being treated with CAR T cells for LBCL and underwent [(18)F]FDG-PET just before CAR T cell infusion. Lesions were segmented semi-automatically with a threshold of 41% of the maximal uptake. In addition to clinico-biological features, sDmax, total metabolic tumor volume (TMTV), SUVmax, and uptake intensity of healthy lymphoid organs and liver were collected. Progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan-Meier method. The occurrence of adverse events, such as cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS), was reported. RESULTS: Fifty-six patients were included. The median follow-up was 9.7 months. Multivariate analysis showed that TMTV (cut-off of 36 mL) was an independent prognostic factor for PFS (p < 0.001) and that sDmax (cut-off of 0.15 m(-1)) was an independent prognostic factor for OS (p = 0.008). Concerning the occurrence of adverse events, a C-reactive protein level > 35 mg/L (p = 0.006) and a liver SUVmean > 2.5 (p = 0.027) before CAR T cells were associated with grade 2 to 4 CRS and a spleen SUVmean > 1.9 with grade 2 to 4 ICANS. CONCLUSION: TMTV and sDmax had independent prognostic values, respectively, on PFS and OS. Regarding adverse events, the mean liver and spleen uptakes were associated with the occurrence of grade 2 to 4 CRS and ICANS, respectively. Integrating these biomarkers into the clinical workflow could be useful for early adaptation of patients management. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. FAU - Marchal, E AU - Marchal E AUID- ORCID: 0000-0001-7165-4755 AD - Department of Nuclear Medicine, Amiens-Picardie University Hospital, Amiens, France. marchal.etienne@chu-amiens.fr. FAU - Palard-Novello, X AU - Palard-Novello X AD - Department of Nuclear Medicine, University Rennes, CLCC Eugene Marquis, INSERM, LTSI-UMR 1099, Rennes, France. FAU - Lhomme, F AU - Lhomme F AD - Department of Clinical Hematology, Rennes University Hospital, Rennes, France. FAU - Meyer, M E AU - Meyer ME AD - Department of Nuclear Medicine, Amiens-Picardie University Hospital, Amiens, France. FAU - Manson, G AU - Manson G AD - Department of Clinical Hematology, Rennes University Hospital, Rennes, France. FAU - Devillers, A AU - Devillers A AD - Department of Nuclear Medicine, CLCC Eugene Marquis, Rennes, France. FAU - Marolleau, J P AU - Marolleau JP AD - Department of Hematology, Amiens-Picardie University Hospital, Amiens, France. FAU - Houot, R AU - Houot R AD - Department of Clinical Hematology, Rennes University Hospital, Rennes, France. FAU - Girard, A AU - Girard A AD - Department of Nuclear Medicine, Amiens-Picardie University Hospital, Amiens, France. LA - eng PT - Journal Article DEP - 20230918 PL - Germany TA - Eur J Nucl Med Mol Imaging JT - European journal of nuclear medicine and molecular imaging JID - 101140988 RN - 0Z5B2CJX4D (Fluorodeoxyglucose F18) RN - 0 (Biomarkers) SB - IM MH - Humans MH - *Fluorodeoxyglucose F18 MH - Positron Emission Tomography Computed Tomography/methods MH - Retrospective Studies MH - *Lymphoma, Large B-Cell, Diffuse/diagnostic imaging/therapy MH - Prognosis MH - Biomarkers MH - T-Lymphocytes OTO - NOTNLM OT - CAR T cells OT - Fluorodeoxyglucose OT - Large B cell lymphoma OT - Positron emission tomography OT - Prognostic factors OT - sDmax EDAT- 2023/09/18 12:43 MHDA- 2024/01/09 06:42 CRDT- 2023/09/18 11:04 PHST- 2023/05/10 00:00 [received] PHST- 2023/09/04 00:00 [accepted] PHST- 2024/01/09 06:42 [medline] PHST- 2023/09/18 12:43 [pubmed] PHST- 2023/09/18 11:04 [entrez] AID - 10.1007/s00259-023-06427-6 [pii] AID - 10.1007/s00259-023-06427-6 [doi] PST - ppublish SO - Eur J Nucl Med Mol Imaging. 2024 Jan;51(2):481-489. doi: 10.1007/s00259-023-06427-6. Epub 2023 Sep 18.